“Not to sound like Lanny, but we are going to have to dump all those emails so better to do so sooner than later,” says the March 2015 message, labeled as from John Podesta to Cheryl Mills and apparently referencing longtime Clinton confidant Lanny Davis.

“Think you just got your new nick name,” Mills replied.

Clinton campaign officials have refused to confirm the authenticity of the emails, which are believed to have been stolen from Podesta’s personal account by Russian government hackers.

Previously released emails have revealed some advisers were frustrated that Clinton hadn't made information about the server public sooner.

"Why didn't they get this stuff out like 18 months ago? So crazy," policy adviser Neera Tanden wrote to Podesta that same evening, March 2, 2015.

"Unbelievable," Podesta replied.

Other messages show the Clinton campaign caught unprepared for the New York Times story, published weeks before Clinton launched her bid for the White House.